Valve mechanism for gas-engines.



c. H. HALLAUER.

VALVE MECHANISM FOR GAS ENGINES. I APPLICATION FILED SEPT.23, 1914.

1 1 90,232. Patented July 4, 1916.

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\ Il l 2 s un" Il o A o -Zzefsfn fm1/wife# UNITED sTATEs PATENT oEEIoE.

CARL H. HALLAUER, OF LOS ANGELES,'CALIFORNIA.

VALVE MECHANISM FOR GAS-ENGlNES.

To all whom, t may concern y -Be it known that I, CARL H. HALLAUER, a citizen of the United States, residing at Los An eles, in the county of Los Angeles, State of alifornia, have invented new .and useful Improvements in Valve Mechanisms for Gas-Engines, of which the following is a specification.

This inventlon relates to a valve mechanism for internal combustion engines.

It is the object of this invention to provide a valve for controlling the cylinder port of an int-ernal combustion engine', and which is arranged to control separate ports in the intake and exhaust manifolds in conjunction with the engine cylinder port.

- Another object is to provide a valve for vplosion stroke of the engine, thereby the valves.

internal combustion engines which will form a double closure betweenfthe intake man1- fold and the engine cylinder with an airv space between the closures during the exrotecting the valve on the intake mani old against the direct action of the heat and explosion in the engine cylinder, and in which the inrush of the gases from the intake manifold will have a cooling action on The invention is illustrated in the accomf panying drawings,` in which- IFigure 1 is a view in vertical section of the valve showing the parts as positioned on the intake stroke of the Yengine piston.

Fig. 2 is a similar section with the parts disposed as positioned on the compression and explosion strokes. Fig. i3 is a section showing the parts as positioned on the scavenging strokes. Fig. 4 is aV plan view.. Fig. 5'is a detail in vertical section of an engine cylinder-illustrating the invention as applied. l

More specifically, 6 indicates the engine cylinder in which a piston 7 is reciprocally mounted in the usual manner common in internal combustion engines; the engine cylinder 6 being provided with a single port 8 adjacent its upper end above the piston 7.

The resent invention resides in a valve mechanism for controlling the intake and exhaust of the gases to and from the engine,

cylinder which mechanism consists of a valve casing 9 formed with a flange 10 Specification of Letters Patent.

Patented July 4, 191e.

Application filed September 23, 1914. Serial N 0.863,165. ,i

eled on its outer marginal edge to form a valve seat 15 to receive a valve 16 on a stem 17. A A

The stem 17 extends horizontally through a boss 18 formed on the outer end of the.

end of the valve casing across which the valve stem 17 extends.

The upper wall of' the chamber 21 is formed with an opening which is closed by a cap 22 having an opening in the side thereof 4which is connected to the intake manifold 23, and the lower wall of the chamber 21 is formedv with an opening 24 which communicates with a cap 25 having a side opening connected with an exhaust manfold 26 or opening to the atmosphere, as desired.

The cap 22 is formed with an inwardly extending tubular portion 27 having a valve seat 28 on its underside to receivea tapered valve 31 mounted on a valve stem 29 which extends at right angles with the valve stem 17 and passes through the cap 25. The upformed and arranged on the valve stem 29' that when it is seated on one seat it will be in an unseated osition withrespect to the other seat thereby providing a double seating valve. A spring 32 bears between the cap 25 and a collarl 33 on thevstem 29 and normally maintains the valve 31 in its lower seat.

The valve stems 17 yand 29 are preferably oii'set in relation to each other; the stem 17 passing through a tube 34 extending across the extension 27 of the cap 22. The valve stems 17 and 29 are designed to be reciprocated at such intervals of -time as to alternately place .the intake manifold and the exhaust manifold into communication with the upper end of the engine cylinder. Any suitable means may be employed for effecting the operation of the valve stems, but this means is here shown as comprising a cam 35 for actuating the valve stem'17 and a cam 36 for actuating the valve stem 29. These cams 35 and 36 are mounted on shafts 37 and 38 respectively, which may be rotatedA continuously in 'any desired manner and timed in relation to the reciprocations of the piston 7 the driving of the shafts 37 and 38 being preferably accomplished by gear connections to the shaft operated by the piston 7, not shown.

The ratio between the rotation of the cam shafts and the piston 7 is one complete rotation of the cam shafts to two complete reciprocations of the piston 7 or two revolutions of the' crank shaft connected thereto. The `cams 35 and 36 are adapted to bear against rollers 39 and 40 on the'ends of the valve stems 17 and 29 to move these valve stems in opposition to the springs 20 and 32. The cam is so shaped as to maintain the valve 16 in an open position during onehalf of the` revolution of the cam shaft 37 and to permit the valve 16 to remain closed the remaining half of the revolution of the shaft 37. The cam 36 is so shaped as to maintain the inlet valve 28 in its closed position during three-fourths of the revolution of the shaft 38 and to maintain the valve 31 in its closed position during onefourth of the rotation of the shaft 38.

In operation of the invention, the parts are positioned as shown in Fig. A1 on the down or intake stroke of the piston 7, that is, the valves 16 and 28 are in their open position so that the downward stroke of the piston 7 will operate to draw the charge of explosive gases into the'upper portion of the engine cylinder from the manifold 23 through the chamber 21 and opening 13. When the engine piston 7 reaches its lowermost position on the intake stroke as'indicated in dotted lines in Fig. 5, theV cams 35 and` 36 will have rotated one-fourth of a revolution and will reverse the positions of the valve stems 17 and 29 s0 as to close the valves 16 and 28 and maintain them in their closed position during the compression and explosion stroke of the piston 7. On the completion of the explosion stroke the cam 35 will operate to move the valve 16 out of its seat so as tol open communication between the engine cylinder and the exhaust manifold 26 through the chamber 21; the exhaust valve 31 being maintained in its unseated position during the scavenging stroke of the piston 7. .On the termination of the scavenging stroke a complete cycle of operation will have occurred and the parts restored to lthe position shown in Fig. 1.

What I claim is:

1. A valve mechanism for internal combustion engines, comprising a valve casing formed with a chamber and having an opening in the side thereof adapted to communicate with the interior of an engine cylinder,`

a valve controlling said opening, a double seating inlet and an outlet valve controlling oppositely disposed ports arranged at right angles to the before mentioned opening, means for positively operating the inlet and outlet valve whereby it will maintain one port closed and the other open, and means for operating the first named valvev to open it simultaneously with the unseating of the inlet and outlet valve.

2. In a valve mechanism for internal combustion engines, a valve casing, an intake manifold connected to vone. side of said casing, an exhaust manifold connected to the opposite side thereof, a valve stem extending through the openings connecting the intake and exhaust manifolds to the valve casing, a double seating valve mounted on said valve stem adapted to alternately open and close the communication between the valve casing and the intake and exhaust manifolds, means for normally maintaining said valve closedv to the exhaust manifold, a normally closed valve controlling an opening in said casing arranged at right angles to the openings communicating with the intake and exhaust manifolds, and means for positively actuating said valves.

In witness that I claim the foregoing l have hereunto subscribed my name this 9th day of September, 1914.

CARL H. HALLAUER.

Witnesses:

EDMUND A. STRAUsE, MRIE BATTEY. 

